What is the purpose of vgextend?
A. Extend a volume group's footprint on disk
B. Add physical volumes to a volume group
C. Increase the number of days between scheduled error checking
D. Create a volume group which uses all available space on disk
題解
「vgextend」指令可以將實體捲軸加入到一個捲軸群組內，擴充它的空間。所以答案是選項B。